Marks a class as an UnfoldingTool container for progressive tool disclosure.

When applied to a class containing @LlmTool methods, creates a facade tool that exposes those methods when invoked. This enables progressive tool disclosure, reducing the initial tool set complexity for the LLM.

Example - Simple facade:

@UnfoldingTools(
    name = "database_operations",
    description = "Database operations. Invoke to see specific tools."
)
public class DatabaseTools {

    @LlmTool(description = "Execute a SQL query")
    public QueryResult query(String sql) { ... }

    @LlmTool(description = "Insert a record")
    public InsertResult insert(String table, Map<String, Object> data) { ... }
}

// Create the UnfoldingTool
UnfoldingTool tool = UnfoldingTool.fromInstance(new DatabaseTools());

Example - Category-based selection:

@UnfoldingTools(
    name = "file_operations",
    description = "File operations. Pass category to select tools."
)
public class FileTools {

    @LlmTool(description = "Read file contents", category = "read")
    public String readFile(String path) { ... }

    @LlmTool(description = "List directory", category = "read")
    public List<String> listDir(String path) { ... }

    @LlmTool(description = "Write file", category = "write")
    public void writeFile(String path, String content) { ... }

    @LlmTool(description = "Delete file", category = "write")
    public void deleteFile(String path) { ... }
}

// Creates a category-based UnfoldingTool automatically
UnfoldingTool tool = UnfoldingTool.fromInstance(new FileTools());